baber/WOPTO huggingface dataset:
Patent KR-20080048010-A (KR)
Title: Apparatus for noninvasive, continuous, and simultaneous measurement of blood pressure and arterial stiffness
Inventor: IM JAE JOONG
IPC: A61B5/02
Filed: 2008-04-30
Abstract: An apparatus for non-invasive, continuous, and simultaneous measurement of blood pressure and arterial stiffness is provided to measure wrist or brachial blood pressure and aortic blood pressure and quantitatively indicate the arterial stiffness. A sensor unit(400) has at least one pressure sensor and one infrared sensor. A sensor fixing unit(313) fixes the sensor unit. A first pressure control device(311) controls pressure of the sensor unit to a subject's neck(350c) when the sensor unit is in contact with the subject's neck. An angle control device(317) controls an angle of the sensor unit to the subject's neck when the sensor unit is in contact with the subject's neck. A position control device(319) controls a position of the sensor unit on the subject's neck when the sensor unit is in contact with the subject's neck. A height control device(321) and a second pressure control device(323) have elasticity and control the pressure of the sensor unit to the subject's neck when the sensor unit is in contact with the subject's neck. A sensor control hinge fixing device(325) fixes the height control device and the second pressure control device. A communication cable(327) transmits an analog signal detected by the sensor unit to signal processing input units to amplify and filter the analog signal.
Patent KR-20090116158-A (KR)
Title: Auto water level control apparatus for agricltural water
Inventor: JANG BONG HAK
IPC: A01G25/16
Filed: 2008-05-06
Abstract: PURPOSE: An automatic water level control apparatus is provided to grow rice stably by preventing cold damage on the rice grains caused by cold water. CONSTITUTION: An automatic water level control apparatus is constituted as follows. An operating unit operates a water-lifting machine. A sunshine detecting unit(22) detects the amount of sunshine to determine whether it is daytime or nighttime. A sunshine distinguishing unit(23) turns on the operating unit in daytime, and turns off the same at night. A water level distinguishing unit(24) turns off the operating unit if the water level is over a reference level. An idling prevention unit(25) makes the operating unit stop if the water is not supplied to the water-lifting machine. A warning unit warns an operator that the idling prevention unit operates. The idling prevention unit is equipped with a water supply detecting sensor.
Patent KR-20080043758-A (KR)
Title: Cooking apparatus
Inventor: LEE TAE HOON
IPC: F24C7/06
Filed: 2008-05-06
Abstract: A cooking apparatus is provided to cook food uniformly through a microwave supply unit and a heater arranged in a cooking space and a convection heater arranged in the rear side of the cooking space. A cooking apparatus includes a cooking space(100), a heater(320), and a microwave introduction port. The heater is arranged on the cooking space. The microwave introduction port is formed in the heater inside the cooking space. The cooking apparatus further includes a component chamber, a magnetron(440) arranged in the component chamber, and a waveguide(330) for transmitting microwave from the magnetron to the port.
Patent KR-20090116887-A (KR)
Title: Thin film transistor and method of manufacturing the same
Inventor: KIM SUNG HOON
IPC: G02F1/136
Filed: 2008-05-08
Abstract: PURPOSE: A thin film transistor and a manufacturing method thereof are provided to reduce an off current without largely increasing the entire tact time. CONSTITUTION: A semiconductor pattern includes the first semiconductor layer(47) formed at the first deposition rate and the second semiconductor layer(48) formed at the second deposition rate faster than the first deposition rate. The semiconductor pattern is arranged on a gate electrode. The first and second electrodes are spaced on the semiconductor pattern. A protection insulating layer(70) is formed on the semiconductor pattern to cover the first and second electrodes. The protection insulating layer forms an interfacial surface with a channel area of the first semiconductor layer.
Patent KR-20090117275-A (KR)
Title: Remote monitoring system associated with iptv and method thereof
Inventor: LEE SANG TAE
IPC: H04N7/18
Filed: 2008-05-09
Abstract: PURPOSE: A remote observation system interworking with IPTV and a method thereof for supplying a monitor image through IPTV are provided to easily control a monitor unit supplying the monitor image and increase the efficiency of IPTV. CONSTITUTION: A remote observation system interworking with IPTV and a method thereof for supplying a monitor image through IPTV include a service providing server(112), a monitor service providing server, a display unit(101) and a settop box(100). The service providing server supplies contents connected through communication network. The sensing service providing server offers monitoring sites and the monitoring image offering the monitoring image. The monitor image supplies the supplying server after authenticating the authentication information. The display unit indicates the contents and monitoring image.
Patent KR-20090117386-A (KR)
Title: Parking apparatus of transmission
Inventor: LEE KYEONG HUN
IPC: F16H63/34
Filed: 2008-05-09
Abstract: PURPOSE: A parking apparatus of transmission is provided to steadily secure the parker condition by forming the simple structure of adding the structure of the conventional transmission. CONSTITUTION: The sleeve(3) of the synchronizer device is equipped in the output axis(1). The parking spline(5) is combined with the spline of a sleeve. The parking spline has the state where it is fixed on the transmission case(7). The parking spline has the transmission case and the structure formed into one body. The synchronizer ring(9), and the clutch gear(11) and speed changing terminal gear(13) are installed in one side of a sleeve. The parking spline is located in the other side of a sleeve. The sleeve is moved to the right side and sets up the corresponding shift gear. The sleeve is moved to the left side and carries out the parking operation.
Patent KR-20080101804-A (KR)
Inventor: JUNG SANG BONG
IPC: F23N1/08
Filed: 2008-05-17
Abstract: 본 발명은 LNG를 연료로 사용하는 산업용 보일러에 있어서, 연비조절 방법과 연속급수 방법을 개선하여 신속한 연비조절을 통해 연소효율을 형상시키고 자동입력 급수 인버터로 급수방법을 개선하여 운용관리 비용이 저렴하게 되는 보일러를 얻고자 한 것으로서 구체적인 것은 배기가스가 배출되는 배기부 산소센서(1)를 장치하여 실시간의 산소량을 측정하고 그 신호를 마이컴(2)에 입력하여 연소에 적합한 급기량을 계산하고 송풍기 작동 인버터 값을 산출하여 송풍기 모터(3)를 구동시키도록 하여 연소에 적합한 급기량을 자동으로 공급하는 연비조절수단과  
     드럼내에 5개의 전극봉을 설치하여 접지, 저수위, 중수위, 고수위, 최고수위로 구분되게 전극봉의 수위를 지정하여 메모리에 저장한 수위센서(4)와  
     드럼내부 압력을 실시간으로 감지하는 관체압력감지센서(5)와 드럼내부 온도를 실시간으로 감지하는 관체온도감지기(6)와  
     버너부하율을 측정하는 버너부하율감지기(7)를 장치하여 각 센서가 감지한 종합 정보를 메모리부를 거쳐 마이컴에 입력하고 종합정보 조건에 맞도록 급수인버터값을  산출하여 급수펌프를 구동시키는 연속 급수수단과 상기 수단들이 보일러 가동 조건에 맞도록 제어관리할 수 있게 마이컴 장치를 구비하여서 되는 ＬＮＧ를 사용하는 산업용 보일러의 연비조절 및 연속급수 시스템이다. 
     
     산소센서, 마이컴, 송풍기모터, 수위센서
Patent KR-20090120305-A (KR)
Title: Device for monitoring leakage of steam generator for atomic power plant and method thereof
Inventor: SOHN WOOK
IPC: G21C17/00
Filed: 2008-05-19
Abstract: PURPOSE: An apparatus and a method for detecting leakage of a steam generator of an atomic power plant are provided to enhance sensitivity about leakage detection by detecting leakage without influence due to a fissile material. CONSTITUTION: An apparatus and a method for detecting leakage of a steam generator of an atomic power plant includes a gamma radiation measuring device, a preamplifier, a rate meter, a computer, and a flowmeter. The gamma radiation measuring device is installed in an exhaust gas system pipe(10), and measures emission gamma ray energy of Ar-41. The preamplifier(22) amplifies the gamma ray signal of the Ar-41 measured by the gamma radiation measuring device. The rate meter(23) converts the gamma ray signal into a radioactive level. The computer(25) calculates and displays a leak rate of radioactivity through the radioactive signal. The flowmeter(27) is installed in the exhaust gas system pipe, and measures an amount of fluid inside the exhaust gas system pipe.
Patent KR-20090125458-A (KR)
Title: System for providing call connection and method thereof
Inventor: HUH YU JIN
IPC: H04M7/00
Filed: 2008-06-02
Abstract: PURPOSE: A call connection providing system and a method thereof between a general number and a cascade number are provided to supply call connection through a representative and dependent number function and supply a call connection detail through internet. CONSTITUTION: A database(600) stores a dependent number matched in the telephone number of a called terminal. A web server(700) receives registration information about the dependent number from a user through network and stores the registration information to database. A service switch(300) interlinks the public telephone switch network and IP network. A service controller(400) receives the originating signal through the service switch and attempts the call connection to the called terminal.
Patent KR-20090126479-A (KR)
Title: Production method of the luminescence decorative sheet for the thermosetting polymer based decorative laminates and thereof
Inventor: MUN SUN KI
IPC: B44C5/04
Filed: 2008-06-04
Abstract: PURPOSE: A manufacturing method of decorative paper and thermosetting synthetic resin based decorative laminates thereby are provided to improve stereoscopic perception with bright luminance in a dark room by dipping patterned decorative paper in the thermosetting synthetic resin. CONSTITUTION: A manufacturing method of decorative paper comprises the following steps of: producing binder-mixed resin by agitating melamine resin of 10kg, phosphorescent material of 1.5 kg, and water-soluble polypyrolidon-based resin of 10kg; gaining a phosphorescent material mixture by agitating a carboxylic-based dispersing agent and ethylene oxide-based dispersing agent with the binder-mixed resin; and producing phosphorescent decorative paper by printing the phosphorescent material mixture on white paper.
Patent KR-20090126555-A (KR)
Title: Test circuit of semiconductor memory apparatus
Inventor: KIM SEUNG BONG
IPC: G11C5/14
Filed: 2008-06-04
Abstract: PURPOSE: A test circuit of a semiconductor memory device is provided to sense the presence of a micro-bridge between a word line and a bit line by using a test mode signal and negative bias voltage. CONSTITUTION: A main word line driver(100) generates a swing signal between first voltage or second voltage and driving voltage in response to a main decoding signal and a test mode signal. A local driver(200) generates a swing signal between the driving voltage and the first voltage or the second voltage in response to a local decoding signal and the test mode signal. A driving voltage applying part(30) receives the test mode signal and an output of the local driver. The driving voltage applying part applies swing voltage between the driving voltage and ground voltage. A sub-word line driver(40) determines an enable state of a sub word line according to an output of the driving voltage applying part and the output of the main word line driver.
Patent KR-20090132209-A (KR)
Title: Image photographing module
Inventor: KIM DAE KYUNG
IPC: H04N5/225
Filed: 2008-06-20
Abstract: PURPOSE: An image photographing module is provided to reduce assembling tolerance between parts. CONSTITUTION: A guide hole into which a guide projection is inserted is formed in a module supporting unit(10) to move a lens assembly. The module supporting unit is arranged behind the lens assembly on an optical axis. A lens driving unit(30) is arranged on the module supporting unit. The lens driving unit comprises a curved vibration type piezoelectric motor bending the lens assembly along with the optical axis. The first and second assemblies(40,50) are interposed between the module supporting unit and the lens assembly.
Patent KR-20090132253-A (KR)
Title: Light emitting diode driver having single stage
Inventor: LEE SANG CHOON
IPC: H05B37/02
Filed: 2008-06-20
Abstract: PURPOSE: A single-ended LED driver is provided to reduce waste of components needed for an LED driver circuit by forming the circuit simply. CONSTITUTION: A bridge rectifying(112) rectifies input current. An EMI(Electromagnetic Interference) filter(110) removes noise. A transformer(120) transforms output of the bridge rectifying circuit. A transformer magnetic flux detection unit(152) detects a magnetic flux of the transformer.
Patent KR-20100002756-A (KR)
Title: Matrix blogging system and service support method thereof
Inventor: JEONG EUI HEON
IPC: G06Q50/00
Filed: 2008-06-30
Abstract: PURPOSE: A matrix blogging system capable of real-time virtual matrix environment based on tag information of a user terminal is provided to express information about a user on the virtual matrix space matched with a real world. CONSTITUTION: A matrix blogging system supplies a real avatar and a virtual avatar corresponding to a portable terminal(200) and a fixing terminal(300) to a virtual world corresponding to a real world. A blogging server(100) offers a virtual matrix space, a virtual avatar and a real avatar to the portable terminal and the fixing terminal. The blogging server offers the contents required for the virtual matrix space. The blogging server receives tag information from a user terminal(400). The blogging server dynamically reflects the tag information to the avatar allocated to the user terminal.
Patent KR-20100004392-A (KR)
Title: Apparatus and method for controlling radio link protocol in mobile communication system
Inventor: HAN SANG JIN
IPC: H04B7/26
Filed: 2008-07-03
Abstract: PURPOSE: An apparatus and a method for controlling a radio link protocol in a mobile communication system are provided to dynamically control a radio link protocol according to a service feature, thereby preventing unnecessary RLP retransmission. CONSTITUTION: An application information receiver(130) receives application information driven in a terminal(200). An RLP retransmission timer(150) measures limit time of RLP packet retransmission. An RLP packet communication unit(160) transfers an RLP packet or an RLP retransmission packet. A controller(120) decides the limit time in consideration of a service feature.
Patent KR-20100006309-A (KR)
Title: System and method of location-based information security
Inventor: LEE DONG HOON
IPC: H04L9/32
Filed: 2008-07-09
Abstract: PURPOSE: A system and a method for protecting position based information are provided to protect the information with electronic form securely by blocking the access according to the position of the access attempt. CONSTITUTION: A user key issuing unit(101) generates a user key reflecting the reading allowance position information of the information with electronic form. The user key issuing unit issues the user key to a user. A position information receiver(104) receives the user position information asking for the reading of the information using the authentication element for authenticating the user with a legal right about the information. A key storage(102) stores the issued user key. The key storage provides the requested information to the user by determining the access position information.
Patent KR-20100006641-A (KR)
Title: X-ray search image transaction system
Inventor: CHOI YOU SCIN
IPC: H04N7/18
Filed: 2008-07-10
Abstract: PURPOSE: An X-ray search image processing system is provided to utilize the problem of a security search equipment system as data for the education of a security search staff and data for preventing the recurrence of a security accident. CONSTITUTION: An image of an X-ray security searcher is obtained by using an image capture board. The image is stored in a database after image correction through an image processing system. Necessary image information is searched through an administrator interface. The searched image information is edited through the administrator interface and utilized as educational data.
Patent KR-20100008124-A (KR)
Inventor: SHIM GI JOONG
IPC: F24H9/00
Filed: 2008-07-15
Abstract: 보일러의 회전판을 회전가능하게 지지하는 베어링이 보일러의 내부의 높은 온도에 의해 파손되지 않고 원할하게 작동할 수 있도록 베어링을 냉각수로 냉각시킬 수 있는 보일러의 베어링 냉각장치가 개시된다. 개시된 냉각장치는 회전축 상단에는 방사형상으로 다수의 배출공이 형성된 회전판이 회전축에 고정되게 설치되며, 상기 회전판 하단으로는 방사형상으로 다수의 배출낙하공이 형성된 고정판이 보일러 측벽에 고정되게 설치되어, 상기 회전판으로 투입된 석탄이 연소된 후 그 재가 회전판의 배출공 및 고정판의 배출낙하공을 통해 하방향으로 배출되는 보일러에 있어, 상기 회전축을 회전가능하게 지지하되, 내부에 냉각수가 유동할 수 있는 환형의 유동공간 및 외부에서 상기 유동공간으로 냉각수가 유입된 후 외부로 배출될 수 있도록 각각 유입공과 유출공이 형성된 메탈베어링과; 보일러 내부에 설치되는 물 탱크와; 상기 물 탱크내의 냉각수가 메탈베어링의 유입공으로 유입된 후 유동공간을 경유한 다음 유출공으로 유출되어 다시 물 탱크로 순환되게 하는 순환파이프와; 상기 탱크내의 냉각수가 순환파이프를 순환하게 하는 순환펌프를 포함하여 구성되는 것을 특징으로 한다. 
       
     보일러, 베어링, 냉각, 순환파이프, 유동공간
Patent KR-20100009000-A (KR)
Title: Piezoelectric properties enhanced bismuth-perovskite composition and the enhancing method of the same
Inventor: SEO WON SEON
IPC: C04B111/90
Filed: 2008-07-17
Abstract: PURPOSE: A bismuth-perovskite composition having improved piezoelectric properties is provided to relieve electric conduction which is expressed in a piezoelectric composition by adding magnesium oxide and manganese dioxide. CONSTITUTION: A piezoelectric composition having improved voltage resistance is denoted by chemical formula, vBi(NiaX1-a)O3-PbTiO3. The piezoelectric composition further contains at least one material selected from manganese dioxide(MnO2) or magnesium oxide(MgO). In chemical formula, X component is one selected from titanium, niobium, tin, zirconium, thallium, and tungsten. If the X is titanium, the ratio of Bi(NiaX1-a)O3 and PbTiO3 is 55 : 45-45 : 55. If the X is niobium, the ratios of the Bi(NiaX1-a)O3 and PbTiO3 is 38 : 62-30 : 70.
Patent KR-20100011374-A (KR)
Title: Shifter and method, substrate transfer apparatus with the shifter and method of the same
Inventor: DO DAE YONG
IPC: B65G47/22
Filed: 2008-07-25
Abstract: PURPOSE: A shifter which converts a substrate transfer route is provided to reduce the time for transferring the substrate and to supply a buffer function when transferring the substrate. CONSTITUTION: First and second frames(106,108) are respectively installed on first and the second substrate transfer path. A plurality of rolling units(132,142) are installed on the upper end of the first and second frames. A jointer is installed between rolling units and units or divides the rolling units. A shifter driving part operates the rolling units so that the rolling units move on the first and second frames. The first frame is installed in a same direction as the first substrate transfer path.
Patent KR-20100012709-A (KR)
Title: Smc composition comprising green tea powder and anti-bacterial article manufactured therefrom
Inventor: PETER Y SIBBETT
IPC: C08K13/00
Filed: 2008-07-29
Abstract: PURPOSE: An SMC(sheet molding compound) is provided to efficiently the proliferation of Escherichia coli, pseudomonas aeruginosa and pyogenic bacteria, to prevent discoloration of molded products, and to obtain good appearance. CONSTITUTION: A method for preparing an SMC(sheet molding compound) comprises the steps of: (i) adding 5-30 weight% of green tea powder prepared by a low temperature pulverization method of 40 °C or less using convection to a composition containing an unsaturated polyester resin, viscosity controller, polymerization retarder, hardener, filler and thickening agent and then mixing them; (ii) mixing a pigment and thickening agent with the mixture of (i) step; and (iii) impregnating a reinforcing agent in the mixture of (ii) step, preparing the impregnated material in a sheet form, and then aging the sheet.
Patent KR-20100013471-A (KR)
Title: Method of manufacturing kimchi
Inventor: PAK HEE OK
IPC: A23L27/10
Filed: 2008-07-31
Abstract: PURPOSE: A method for making Kimchi is provided to improve tastes, nutrient and intake convenience of the kimchi, and to increase a lifespan of the kimchi while maintaining the freshness of the kimchi for a long time. CONSTITUTION: A method for making Kimchi comprises the following step: salting Chinese cabbage; manufacturing mixed seasoning juice; and mixing the salted Chinese cabbage and the mixed seasoning juice. The mixed seasoning juice includes 110 ~ 130 parts by weight of red pepper, 80 ~ 100 parts by weight of mustard juice, 900 ~ 1100 parts by weight of radish juice, 350 ~ 450 parts by weight of garlic extract, 150 ~ 250 parts by weight of salt-pickled shrimps and 30 ~ 60 parts by weight of sugar. The salted Chinese cabbage includes one or more leaf selected from a group consisting of a sesame leaf, a perilla leaf, a red mustard leaf and red chicory.
Patent KR-20100016893-A (KR)
Title: Method for isolation of l-arabinose by arabinofuranosidase treatment with addition of kcl or nacl
Inventor: KIM TAE JIP
IPC: C12P19/02
Filed: 2008-08-05
Abstract: PURPOSE: A method for isolating L-arabinose through enzyme hydrolysis is provided to ensure reaction activity of enzyme by adding KCl or NaCl and selectively isolate L-arabinose. CONSTITUTION: An L-arabinose is isolated by treating arabinofuranosidase to a substrate liquid containing polymer having L-arabinose. The arabinofuranosidase reactivity is enhanced by adding KCl or NaCl. The polymer having the L-arabinose is a polymer having L-arabinose of homo form or hetero form. The polymer containing L-arabinose of homo form is arabinan. The polymer having L-arabinose of hetero form is arabinoxylan.
Patent KR-20100025369-A (KR)
Inventor: YOON HYUNG UI
IPC: A61C8/00
Filed: 2008-08-27
Abstract: 본 발명은 임플란트용 골이식재 고정구에 관한 것으로, 더욱 상세하게는 자성을 갖는 커버스크류를 이용하여 차폐막을 임플란트의 상부에 용이하게 탈부착할 수 있게 하고, 특히 커버스크류에는 자체 탄성을 갖는 지지편을 통해 자연스럽게 차폐막을 덮어 골이식재가 외부로의 이탈이라든가 주변조직의 증식을 방지할 수 있는 임플란트용 골이식재 고정구를 제공하는데 그 목적이 있다. 이러한 목적을 달성하기 위한 본 발명에 따르는 임플란트용 골이식재 고정구는, 상면이 자성체(12)를 구비하는 커버스크류(11)를 포함하여 이루어져 치조골(200)에 식립되는 임플란트 지주대(10); 상기 임플란트 지주대(10)의 상부에 안착되어 이식된 골이식재(300)를 감싸주기 위한 차폐막(20); 및 상기 임플란트 지주대(10)와 자력으로 탈부착되며, 상기 차폐막의 상부에 안착되어, 상기 차폐막(20)을 고정시켜 주는 차폐막고정구(30);를 포함하여 이루어진 것을 특징으로 한다. 본 발명에 따르면, 1) 자성을 이용하여 쉽게 차폐막을 고정시킬 수 있기 때문에 시술에 따른 시간을 줄일 수 있다. 2) 자성에 의해 주변 세포가 끌리는 효과를 얻을 수 있기 때문에 시술 후 회복 시간을 줄일 수 있게 된다. 3) 차폐막을 지지해 주는 지지편의 길이를 임의로 조절하여 이용할 수 있기 때문에 골조직의 손상 정도에 따라 알맞은 차폐막의 선정 및 이를 탄성지지하는 것을 용이하게 할 수 있다. 
       
     임플란트 지주대, 커버스크류, 자성, 차폐막, 니켈-티타늄 와이어, 지지편
Patent KR-20080084792-A (KR)
Inventor: YOO JONG HO
IPC: G02C7/14
Filed: 2008-08-29
Abstract: 본 발명은 세 방향을 동시에 볼 수 있는 안경에 관한 것으로서 일정한 빛투과율을 갖는 두 개의 반사경을 일정각도로 비스듬히  마주보도록 배열한 것을 이용하여 사용자의 전방 및 좌측방향 과 우측방향을 동시에 볼 수 있는 것으로서 사용자가 평상시의 시선 방향을 보면서 동시에 그 시선 방향과 과 좌우로  앞뒤로 또는 상하로 약 90도 떨어진 방향을 동시에 보는 것이 가능하도록 하는 것을 특징으로 한다. 
       
     반거울,Half Mirror,반사경, 누워서, 세방향을동시에,굴절경,프리즘
Patent KR-20100029394-A (KR)
Title: Backlight unit
Inventor: KIM YOUNG IL
IPC: G02F1/1333
Filed: 2008-09-08
Abstract: PURPOSE: A backlight unit is provided, which obtains the effect of reducing the noise and attenuating electromagnetic interference. CONSTITUTION: A backlight unit comprises a bottom chassis(10) and a ground member(20). The bottom chassis is formed in a plate shape having the constant area and is equipped with one or more lamp in the upper part. While displacing in order to lessen the electromagnetic interference, the ground member reduces the noise generated therebetween.
Patent KR-20100030342-A (KR)
Title: Sensor apparatus for measuring thermal and fast neutrons, system including the same and method for measuring thermal and fast neutrons using these
Inventor: HA JANG HO
IPC: G01T3/08
Filed: 2008-09-10
Abstract: PURPOSE: A sensor apparatus for measuring neutrons, a system including the same and a method for measuring the neutrons using the same are provided to simultaneously measure thermal and fast neutrons using a thermal and a fast neutron measuring sensor including a layer of neutron conversion material. CONSTITUTION: A first sensor unit(110) measures the dose of fast neutron. A second sensor unit(120) measures the dose of thermal and fast neutrons. A neutron conversion unit(130) surrounds the second sensor unit and generates ions which causes electrical signal to the second sensor unit. The first sensor unit and the second sensor unit include a semiconductor. The neutron conversion unit is a layer of neutron conversion material.